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Flashcards in Animals Part 2 Deck (49)
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1

What is the common name for phylum Annelida

Annelids

2

What are characteristics of phylum Annelida

Derived from Latin word meaning little rings
True Coelom
Segmented bodies
Complex organ systems including specialized gut, closed circulatory system, and nephridia
Most annelids have fleshy appendages called parapodia
Terrestrial annelids breath through the skin and aquatic annelids breath through gills
Have ganglia with 2 nerve chords that run the length of the body

3

What are characteristics of Polychaeta

Means many bristles
Have parapodia and distinct heads
Marine
Examples: feather dusters, tube worms, fire worms

4

What are characteristics of Oligochaeta

Means few bristles
Live in soil and fresh water
Ex: earthworms, tubifex worms

5

Characteristics of hirudinea

Leeches
Some are freshwater, external parasites and some are carnivores
Use suckers to attach to skin and a proboscis to penetrate the skin and the pharynx sucks out the blood

6

What are Nematoda characteristics

Common name: roundworms
May be free living or parasitic
Breath through body walls by diffusion
Have ganglia and simple nervous system
Reproduce sexually
Pseudocoelomates

7

Characteristics of hookworms

Parasitic worms that live in the intestines and feed on blood
Release eggs into feces and the larvae bore through the hosts feet to enter the body-travel to lungs where they are coughed up-swallowed and move through stomach into intestines

8

Characteristics of ascaris

Parasites that live in the intestines of pigs, horses, and humans
Feed on digesting food
Leave body with feces and enter hosts through contaminated water or food, larvae hatch in the intestines and bore into the blood stream -lungs- coughed up and swallowed- return to intestines to mature

9

Characteristics of pinworms

Most common parasite in US
Live in lower intestines and come out anus at night and lay eggs on the skin around the anus
Cause no major diseases

10

Characteristics of filarial worms

Affected 250 million people in the tropics
Larvae transmitted by mosquitoes
Block lymphatic vessels causing elephantiasis
Another type of filarial worm causes heartworm disease in cats and dogs

11

Name the remaining phylums

Annelida (Polychaeta and Oligochaeta, hirudinea), Nematoda (hookworms, ascaris, pinworms, filarial worms), Arthropoda , Echinodermata , Chordata

12

Name the three classes of annelids, their habitat and their organisms included in each class

Polychaeta- marine,
Feather dusters, tube worms, fire worms,

Oligochaeta - soil and freshwater
Earthworms, tubifex worms,

Hirudinea- freshwater, leeches

13

How many pairs of hearts do earthworms have

5

14

What two structures divide annelids into classes

Parapodia and setae

15

What phylum has the simplest organisms with a mouth and anus

Annelida

16

What is the difference in the oral and aboral surfaces of a starfish

Oral surface bottom side with their mouth, aboral surface top side with spines

17

What group of parasitic worms enter through the feet

Nematoda

18

What group of parasitic worms are transmitted by Mosquitos

Filarial worms

19

What does arthopoda mean

Jointed feet

20

What does echinoderms mean

Spiny skin

21

What does Polychaeta mean

Many bristles

22

What does Oligochaeta mean

Few bristles

23

List the names of the 5 sub phyla of arthopods and organisms in each group

Trilobita- extinct
Chelicerata- horseshoe crabs, scorpions, ticks, mites. Spiders
Crustacea- shrimp, crabs, lobsters, barnacles, pill bugs
Myriapoda- centipedes, millipedes
Hexapoda- insects

24

What is the hard covering of arthopods called, what is it made of

Exoskeleton, chitin (polysaccharide that allows flexibility)

25

Trace the passage of food through each digestive organ and describe the function in an earthworm

Food enters the mouth, then goes through the pharynx, where it is transported to the esophagus, which takes it to the crop, where it is stored until it goes to the gizzard, where it is broken up and digested, then absorbed in the intestine, before being expelled through the anus

26

What group of echinoderms most closely resembles a starfish

Brittle stars

27

What group of echinoderms looks like a warty pickle

Sea cucumbers

28

Describe the body symmetry of an adult echinoderm and larval echinoderm

Radial symmetry as adults, bilateral as larva

29

What nematode causes elephantiasis

Filarial worms

30

What nematode is transmitted by contaminated water or food

Ascaris